* {
  box-sizing: border-box;
}
html,body {
  height: 100%;
}
body {
  margin: 0;
  background: url(./images/bg2.jpg) 50% 50% no-repeat;
  background-size: cover;
  letter-spacing: 2px;
  line-height: 2;
}
@font-face {
  font-family: 'Consolas';
  src:url('./consola.ttf') format('truetype')
 }  
pre {
  display: flex;
  flex-direction: column;
}
code {
  font-family: Consolas, 'Courier New', monospace;
}
/* impress 相关 */
.step {
  font-size: 22px;
  width: 1200px;
  height: 800px;
  background: linear-gradient(to bottom, rgba(255,255,255,0.6), white);
  box-shadow: 1px 1px 10px 0 rgba(0,0,0,0.3);
  border-radius: 0 20px 40px;
  padding: 20px;
}
#overview {
  display: none;
}
.impress-on-overview .step {
  overflow: hidden;
}
.impress-on-overview .step::after {
  position: absolute;
  content: attr(data-desc);
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  background: white;
  color: red;
  font-size: 100px;
  display: flex;
  align-items: center;
  justify-content: center;
  line-height: 1.2;
  padding: 20px;

}
/* --- impress end ---- */


.app__title {
  font-size: 32px;
  text-align: center;
}
.app__title--second {
  font-size: 28px;
}
.app__linkbtn {
  color: #6af;
  cursor: pointer;
}

.app__control {
  position: fixed;
  right: 0;
  bottom: 0;
  z-index: 10000;
  user-select: none;
  cursor: pointer;
}
.app__control ul {
  list-style: none;
  padding: 0;
  margin: 0;
}
.app__control li {
  width: 100px;
  text-align: center;
  background: #f9d3c8;
  border-radius: 20px 0 0 20px;
  margin: 5px;
}
.app__control li:hover {
  
}
.impress-enabled .app__control {
  pointer-events: auto;
}

.img__center {
  text-align: center;
}
.img__list {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  flex-wrap: wrap;
  line-height: 0;
  background: #272822;
}

.img__wrapper {
  width: 50%;

}
.img__wrapper img {
  width: 100%;
}
